Bearing for elevator-carriage rollers.



PATENTRD MAR. 2z, 1904.

y J. BARRETT. BEARING PoR RLRVATOR vCARRIAGE RoLLRRs.

APPLICATION FILED AUG. B, 1903.

A 77'0HNE YS.

ordinary hod-elevator equipped with my im- Patented March 22, 1904.A

' UNITED STATES PATENT OFFICE.

JAMES BARRETT, OF NEW YORK, N. Y.

BEARING Fon ELEvAToR-CARRIAGE ROLLERS.

SPECIFICATION forming part of Letters Patent No. 755,344, dated March 22, 1904.

Application filed August 8, 1903.

To fir/ZZ whom/it mar/y concern:

Be it known that I, JAMES BARRETT, a subject of the King of Great Britain, and a resi-l dent of the city of New York, borough of Manhattan, in the county and State of New York, have invented va new and Improved Bearing for Elevator Carriage Rollers, of which the following is a full, clear, and exact description.

My invention relates to improvements i elevators, and the object that I have in view is to provide a simple construction which minimizes friction on the engaging surfaces, thus preventing binding and cutting -of the parts.

A further object is to so constructv the parts as to produce a strong and .light structure, owing to the fact that it is not necessary to cut away the stiles of the elevator-carriage to any material extent in order to mount the rollers thereon.

Further objects and advantages of the invention will appear in the course of the subjoined description, and the actual scope thereof will be defined by the annexed claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

- Figure 1 is an elevation of a portion of an provements. Fig. 2is an enlarged cross-sectional view through one of the rollers and its supporting means, by which the roller is mounted on the carriage. Fig. 3 is an elevation of the parts shown by Fig. '2, and Fig. 4 is a cross-section of another embodiment of the roller and its supporting means. I

A designates the guides, and B a slidabl carriage forming a part of an ordinary hodelevator employed by workmen in transporting materials-such as mortar, brick, and the like-from the' ground to the oors of a buildin the course of erection. As shown by the drawings, the carriage B consists of the stiles and the cross-pieces b', Vand this carriage is also equipped with means whereby one or a plurality of hods,- such as O, may be supported thereon in order to be carried by the elevator to the workmen engaged in the upper part of Serial 110.168,787. (No model.)

"a building. The detailed construction of the carriage, however, and the means for mounting the hods C thereon may be modified within provide the Stiles I? of the carriage with deep4 recesses for the reception of guides by which.

the carriage is slidably iitted to the side mem- .bers A of the upright or inclined frame; but

so far as I am aware these stiles have been recessed to such a depth that they are matelrially weakened by the formation of the recesses which accommodate the guides. the present mventlon 1 aim to overcome this objection and to provide an improved/ :means for guiding the carriage, said meansv v'having any sidewise or lateral vibration `or play, and' to allow the antifriction devices to be mounted in the carriage Withoutcutting away the stiles thereof to such an extentas to weaken said carriage. Each stile b of the carriage is provided with a recess 5, which 'should not extend into or across the stileto any lappreciable depth, and this recessre- ,ceives a part of a guide-roller 6. Y Againstthe respective faces of the stile b of the carriage are rigidly secured the bracket-plates 7 8, (see Figs. 2 and 4,) each bracket plate being offset from the face of the stile and the two bracket- ;plates being securedto the respective sides of the stile by means of bolts'9. y These bolts serve to fasten both bracket-plates to the car-` riage; but it is evident that the bracket-plates -I may be individually fastened in place, if desired. AThe bracket-plates are spaced later- `ally with respect to the carriage-stile, and

said plates are provided with straight edges l0 and with a curved edge 11, as shown by Fig. 3. The curved edge of each plate extends slightly beyond the edge of the carriage-stile, and the. middle portions of the pair of plates are opposite to the recess 5 in the stile. These platesyat their middle portions are provided with inwardly-extending bosses l2, which are formed l on the opposing facesof the plates and are IOO disposed in concentric relation. Through the bsses of the pair of plates passes a bolt or arbor 13, on which is loosely mounted the roller 6, whereby the arbor serves to connect the roller to the bracket-plates, which in turn are fastened solidly on the carriage-stile. The roller is shown as consisting of a drum 6n and face-plates or flanges 6b, said drum and the flanges being made in one piece, as represented by Fig. 2, although this detailed construction of the roller is not an essential feature of the invention. The drum of the roller is arranged to fit snugly in the recess 5 of the carriage-stile, whereas the flanges or faceplates of said roller are adapted to fit around the edges of the carriage-stile and the guide A, as shown by the drawings. The roller is thus mounted on the carriage to travel therewith, and it is arranged to ride upon the edge portion of the guide A, which opposes a similar portion of the carriage-stile; but the flanges or face-plates of said roller fit around'the stile and the guide A in a way to confine the carriage against lateral movement or displacement with respect to the guides.

In the construction shown by Fig. 2 the end portions of the roller 6 are provided with channels 14, which form cups adapted to receive the bearing-balls 15. The cups of the roller also receive the conical bosses 12 of the stationary bracket-plates, said bosses being adapted to engage with the bearing-balls, and thereby constitute ball-bearings between the bracket-plates and the end portions of the roller.

In Fig. 4 of the drawings I have illustrated another embodiment of the roller and the means for mounting the same on the carriagestile 65, the latter being provided with the recess 5u and having the pair of companion bracket-plates T 8 bolted solidly thereto, as at 9. The companion bracket-plates are provided on their opposing faces with annular tapering' ribs 16, which are disposed in concentric relation, and the end portions of the roller have grooves 17, adapted to snugly receive the annular flanges which form the bearings for the roller, said parts being fitted compactly for the exclusion of dirt and dust from the roller-bearings. The roller is free to turn on the arbor 13 and the bearings afforded by the annular flanges 16. and in the construction shown by said Fig. 4I dispense with the series of bearing-balls 15, thus simplifying the construction. Said Fig. 4 also represents another form of roller wherein the drum portion 6 thereof is divided transversely, so as to produce complemental sections or members of the roller. One section of the roller is provided with a flange or face-plate and with a socket 18, while the other roller-section has the other flange or plate and a conical projection or boss 19, the latter being fitted snugly in the socket 18 when the roller-sections arev assembled, as shown by Fig. 4 of the drawings.

Although I have shown and described the roller as having the flanges or face-plates made in one piece therewith or with the sections of the roller, I do not desire to limit myself to this particular construction, because I am aware that the flanges or face-plates may be made in separate pieces from the roller-drum and that they may be secured thereto in any suitable way.

Although I have described my improved roller in connection with an elevator of the kind known hod-elevators, I would have it understood that the improvements may be used on freight, passenger, and other kinds of elevators. y

Having thus described my invention,I claim as new and desire to secure by Letters Patent- 1. In an elevator, the combination with a guide, and a carriage having a recessed stile, of a roller mounted on said carriage to partly occupy the stile, said roller having flanges or face-plates disposed for engagement with the stile and with said guide.

2. In an elevator, the combination with an upright frame, and a carriage, of a roller provided with flanges or face-plates. said roller being mounted on the carriage to ride upon the frame, and the flanges or face-plates of the roller beingdispo'sed for engagement with the respective sides of the carriage and a guide.

3. In an elevator, a carriage, complemental bracket-plates fixed thereto, an arbor supported by said bracket-plates, and a roller mounted on said arbor.

4. In an elevator, acarriage, complementa] bracket-plates fixed thereto and provided with bearings on their opposing faces, an arbor supported by said bracket-plates, and a recessed roller revoluble on said arbor and having engagememt with said bearings of the bracket-plates.

5. In an elevator, acarriage, bracket-plates fixed thereto andA provided with bearings on their opposing faces, an arbor supported by said bracket-plates, and a roller revolubly mounted on said arbor; said roller having recesses or grooves in its ends for the reception of the bearings of the bracket-plates.

6. In an elevator, acarriage, bracket-plates fixed thereto and provided on their opposing faces with bearings, an arbor supported by said bracket-plates, and a divided flanged roller revolubly mounted on said arbor and engaging with the bearings of the bracketplates.

In testimony whereof I have signed my name to this specification in the presence of two su bscribing witnesses.

JAMES BARRETT.

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